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81.
How important is improving food availability for reducing child malnutrition in developing countries? 总被引:1,自引:0,他引:1
Do increases in the food supply per person in a country, i.e., national food availability, contribute substantially to reductions in malnutrition among its children? This paper sets out to answer this controversial question using panel data from 63 developing countries over 1970–1996. This paper gives evidence in support of a statistically significant and strong positive impact of national food availability on child nutrition, finding that increased food supplies have resulted in significant reductions in malnutrition since the 1970s despite population increases over the period. However, per‐capita food supplies have a declining marginal impact: their effect is quite strong for countries with very low food availability (e.g., most countries in sub‐Saharan Africa and South Asia), but weak or non‐existent for those with high levels (e.g., most countries in the Near East and North Africa). Further, non‐food factors, such as women's education and status and the quality of health environments, are also important determinants of children's nutritional status. Depending on the state of food availability in any particular geographic area and relative costs, these factors may merit greater priority in policies to reduce malnutrition. 相似文献
82.
Johanna Catherine Maclean Douglas A. Webber Michael T. French Susan L. Ettner 《劳资关系》2015,54(3):478-498
This study investigates the associations between self‐assessed adverse labor market events (experiencing problems with coworkers, employment changes, financial strain) and health. Longitudinal data are obtained from the National Epidemiological Survey of Alcohol and Related Conditions. Our findings suggest problems with coworkers, employment changes, and financial strain are associated, respectively, with a 3.1 percent (3.3 percent), 0.9 percent (0.2 percent), and 4.5 percent (5.1 percent) reduction in mental health among men (women). Associations are smaller in magnitude and less significant for physical health. 相似文献
83.
This study examines the impact that the publication of ratings of boards of directors by the business press has on stockholder wealth. We report findings from an event study of price reactions to the publication of Business Week's 1996 and 1997 ratings of boards of directors of U.S. corporations. As hypothesized, favorable ratings resulted in significant positive abnormal returns after controlling for market effects and confounding events, with only novel information explaining statistical variance. Contrary to expectations, unfavorable ratings also resulted in positive abnormal returns. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
84.
85.
Jacqueline S. Hammersley Linda A. Myers Catherine Shakespeare 《Review of Accounting Studies》2008,13(1):141-165
We examine the stock price reaction to management’s disclosure of internal control weaknesses under §302 of the Sarbanes Oxley
Act and to the characteristics of these weaknesses, controlling for other material announcements in the event window. We find
that some characteristics of the weaknesses—their severity, management’s conclusion regarding the effectiveness of the controls,
their auditability, and the vagueness of the disclosures—are informative. We also find that the information content of internal
control weakness disclosures depends on the severity of the internal control weakness. Moreover, in a sub-sample uncontaminated
by other announcements in the event window, we find negative price reactions to the disclosure of internal control weaknesses
and material weaknesses.
相似文献
Catherine ShakespeareEmail: |
86.
In 2006, Massachusetts adopted a new policy that prohibits home sellers from resetting their properties’ days on market through relisting. Massachusetts homes exposed to the policy change experienced a $16,000 reduction in sale price relative to Rhode Island homes. Slow‐moving homes suffered a greater reduction, but newer listings only had a small increase in sale price. One reason is that some buyers were unaware of sellers’ manipulation of days on market and thus unable to recognize authentically new listings. Sellers reacted to the new policy by cutting listing prices, although in towns where listing price history was transparent, sellers raised listing prices to dampen the stigma of slow sales. 相似文献
87.
88.
AbstractSociology has made significant contributions to the conceptualisation of risk and critique of technical risk analysis. It has, however, unintentionally reinforced the division of labour between the natural/technical and social sciences in risk analysis. This paper argues that the problem with conceptualisations of risk is not a misplaced emphasis on calculation. Rather, it is that we have not adequately dealt with ontological distinctions implicit in both sociological and technical work on risk between material or objective risks and our socially mediated understandings and interpretations of those risks. While acknowledging that risks are simultaneously social and technical, sociologists have not, in practice, provided the conceptual and methodological tools to apprehend risk in a less dualistic manner. This limits our ability both to analyse actors and processes outside the social domain and to explore the recursive relationships between risk calculus, social action and the material outcomes of risk. In response, this paper develops a material-semiotic conceptualisation of risk and provides an assessment of its relevance to more sociologically informed risk governance. It introduces the ideas of co-constitution, emergent entities and enactment as instruments for reconciling the material and social worlds in a sociological study of risk. It further illustrates the application of a material-semiotic approach using these concepts in the nuclear industry. In deconstructing social–material dualisms in the sociology of risk, this paper argues that a material-semiotic conceptualisation of risk enables both technical and social perspectives on risk not only to coexist but to collaborate, widening the scope for interdisciplinary research. 相似文献
89.
High-tech firms increasingly rely on inter-firm collaboration (IFC) in new product development (NPD). While there is a growing research interest in exploring the economic rationale of IFC through the transaction cost economics (TCE) and the resource synergy of IFC through the resource-based view of the firm (RBV), little attention has been given to the institution-based view (IBV) that also has important implications for firms’ choice of IFC. In particular, how national institutional environment affects IFC in the NPD process remains under-researched. This study aims to contribute to the literature by extending our understanding of the role of IFC in firms’ NPD process, taking into account transactional, resource, and institutional factors. Based on a case study of two firms: a state-owned and a private pharmaceutical firm in China, our research identifies three key forms of IFC, which are dynamic at different stages of NPD and contingent upon an array of institutional, resource, and transactional rationales underpinning firms’ choice of different forms of IFC. Our study is the first one that investigates the role of IFC in the NPD process bringing together the IBV, RBV, and TCE perspectives. 相似文献
90.
This paper provides an analysis of a non‐cooperative pairwise bargaining game between agents in a network. We establish that there exists an equilibrium that generates a coalitional bargaining division of the reduced surplus that arises as a result of externalities between agents. That is, we provide a non‐cooperative justification for a cooperative division of a non‐cooperative surplus. The resulting division is related to the Myerson‐Shapley value with properties that are particularly useful and tractable in applications. We demonstrate this by examining buyer‐seller networks and vertical foreclosure. 相似文献